Airplane toilets are loud. For some, they are downright terrifying. But chin up, frequent flyers, because a group of physicists have figured out how to make them quieter. After two years of trial and error, three academic publications and thousands of flushes, the researchers have invented a vacuum-assisted toilet that is about half as loud as the regular airplane commode.
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/04/190404074905.htm
from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/04/190404074905.htm
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